Copying-press.



Patented Sept. 26, I899. J. R. FREULER.

COPYING PRESS.

(Application mm by 24, 189B.)

Inventor.

w MM at; zMyM Attorneys (No Model.)

NITED STATES PATENT Erica.

JOHN RUDOLPH FREULER, OF MILWAUKEE, WISCONSIN.

COPYING-PRESS.

SPECIFICATION forming part of Letters Patent No. 633,645, dated September 26, 1899.

Application filed May 24,1898. Serial No. 681,587. (N0 e T0 aZZ whom it may concern.-

Be it known that 1, JOHN RUDOLPH FREU- LER, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of \Visconsin, have invented new and useful Improvements in Copying-Presses, of which the following is a specification.

My invention relates to improvements in that class of copying-presses in which the pressure is applied by means of a lever and cam or eccentric.

The objects of my invention are, first, to provide a quick-acting press; second, to reduce the labor of operating the press; third, to provide a press in which the upper pressure plate or platen will remain normally tilted to facilitate insertion of the copy-book between the plates, and, fourth, to provide a press of the described class which is adapted for books of various sizes.

In the following description reference is had to the accompanying drawings, in which- Figure 1 is a top view of my invention. Fig 2 is a section view drawn on line 00 m of Fig. 1. Fig. 3 is a perspective view of the handle and eccentrics.

Like parts are identified by the same reference-letters throughout the several views.

A base block or plate A is provided on each side with upwardly-proj ect-in g bearing brackets or standards B.

C is a press plate or platen provided with a rod D, which is secured to its upper surface by straps E, the surface of the plate 0 being preferably channeled for the partial reception of the rod, as shown in Fig.2. Near each end the rod D is reduced in size and provided with thimbles F, which turn loosely thereon. The extreme ends of the rod are entered in slots G in the standards B, the slots being of substantially the same width as the diameter of the rods. The edges of the slots not only serve as guides for the rods, but also prevent the thimbles F from slipping off.

Operating levers H are connected by a cross-bar I at their upper ends and by a rod J near their lower ends, the latter being arranged to project and engage in journal-bearings J in the standards, thus forming fulcrums for the levers,jand the lower ends of the levers are enlarged laterally to form the eccentrics K and L, the eccentrics K being much larger than L for a purpose hereinafter explained. The lower ends of the levers H are provided with a curved recess h, in which the collars F of the rod engage when the levers are in an uprightposition, as shown in Fig. 2.

The rods J and D are connected together by means of a U-shaped spring-plate M,

to the right the rod D and plate 0 will be forced downwardly against the tension of the spring M by pressure of the eccentric K. On

the other hand, if the levers H are moved to the left the rod D and plate 0 will be forced downwardly to a less distance by means of the eccentric L, the thimble F rotating upon the rod D in either case to relievethe friction. The eccentrics K and L are preferably so formed that the former will be normally adapted for copy-books of about five hundred sheets each and the latter adapted for copybooks of about one thousand sheets each.

.Vith a construction of this kind I can by the insertion of a removable plate 0 over the bed-plate A, as shown in Fig. 2, adapt the press for copying-books of about two hundred and fifty and seven hundred and fifty sheets, respectively. As the four sizes of books mentioned comprise all the sizes in common use, it will be seen that my device is thus adapted to meet all ordinary requirements.

It will be further observed that the plate 0 is provided at each end with downwardlyprojecting flanges P, which prevent the plate from slipping away from the bed-block A. Should any other adjustment become necessary in order to adapt my press for a book of unusual size, this can be easily accomplished by the insertion of paper or any other substance between the plate 0 and block A, the material inserted being held in place by the plate 0 and obscured from view thereby.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A copying-press comprising a bed-plate, a pressure-plate m ovably supported above the same, a lever provided with cams of unequal size for actuating the pressuieplate, and suitable bearings for said cams connected with the pressure-plate, the end of said lever being recessed between the cams toreceive said bearings when the lever is adjusted with the cams in an inoperative position.

2. A copying-press, comprising abed-plate provided with upwardly-projecting standards, a pressure-plate, one or more levers pivotally secured to the standards and provided with cams of unequal size for actuating the pressure-plate, a rod secured to the pressureplate and engaged in suitable guides in the standards, and rotatable collars disposed on said rod and adapted to serve as bearings for the cams, substantially for the purpose set forth.

3. A copying-press comprising a bed-plate, provided with upwardlyprojecting standards, a pressure-plate, one or more levers provided with cams for actuating the pressureplate, a rod secured to said levers and journaled in the standards, a rod secured to the press ure-plate and engaged in suitable guides in the standards, a spring connecting the lever-rod with the pressure-plate to normally elevate the latter, substantially for the purpose set forth.

4. A copying-press comprising a bed-plate,

provided with upwardlyprojecting standards, a pressure-plate, one or more levers provided with cams for actuating the pressureplate, a rod secured to said levers and journaled in the standards, a rod secured to the pressure-plate and engaged in suitable guides in the standards a spring connecting the leverrod with the pressure-plate and adapted to normally elevate the latter, said spring being arranged to bear upon a shoulder or projection of the pressure-plate, whereby the latter is tilted, substantially for the purpose set forth.

5. A copying-press, comprising a bed-plate provided with npwardlyprojecting standards, a pressure-plate movably held by the standards, means for automatically holding the same in a normally-raised position, one or more levers fulcrumed to the standards and provided with cams of unequal size for actuating the pressure-plate, and antifi-iction devices interposed between the cams and the pressure-plate, said lev'ers being provided with curved recesses in their lower ends intermediate of the cams, in which recesses said antifriction devices are adapted to engage when the levers are in an upright position, substantially for the purpose set forth.

In witness whereof I have hereunto set my hand this 18th day of May, 1898.

JOHN RUDOLPH FREULER.

Witnesses:

J AS. B. ERWIN, LEVERETT 0. WHEELER. 

